Two-door lock device

ABSTRACT

A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors of the building from the outside. The lock device includes an elongated wire cable having the outer end attached to the inner side of the outer door, and the inner end thereof passed over one edge of the inner door and secured interior of the inner door.

United States Patent [191 Buettner 1 Sept. 17, 1974 1 TWO-DOOR LOCK DEVICE [76] Inventor: Larry H. Buettner, 23825 Battelle,

Hazel Park, Mich. 48030 [22] Filed: May 24, 1973 [21] Appl. No.: 363,584

[52] US. Cl 292/262, 292/264, 232/43.4, 49/67 [51] Int. Cl. E05c 17/04 [58] Field of Search 292/262, 346, 264, 288,

[56] References Cited UNITED STATES PATENTS 647,517 4/1900 Pike 248/465 694,975 3/1902 Marshall 292/262 880,214 2/1908 Hennings 292/264 1,063,404 6/1913 Wichers 292/262 1,222,966 4/1917 Matchette. 49/67 X 1,497,740 6/1924 Shenkein 292/288 X 2,000,366 5/1935 Victor 49/67 X 2,100,212 11/1937 Ferret 232/43.4 3,451,708 6/1969 Brooks 292/264 FORE1GN PATENTS OR APPLICATIONS 10,986 5/1899 Great Britain 49/67 75,492 8/1949 Norway 292/262 Primary Examiner-Bobby R. Gay Assistant ExaminerPeter A. Aschenbrenner Attorney, Agent, or Firm-Robert G. Mentag [5 7 ABSTRACT A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors of the building from the I outside. The lock device includes an elongated wire cable having the outer end attached to the inner side of the outer door, and the inner end thereof passed over one edge of the inner door and secured interior of the inner door.

9 Claims, 8 Drawing Figures PAIENTEU SEP! 71924 KHEET 2 OF 2 TWO-DOOR LOCK DEVICE SUMMARY OF THE INVENTION This invention relates generally to the lock art, and more particularly, to a lock device for locking two oppositely swingable building doors together to prevent unauthorized entry from the exterior of the building. It is the primary object of the present invention to provide a simple and economical two-door lock which cannot be picked or jimmied from the outside of a building. The lock of the present invention can only be locked and unlocked from the inside of the building.

It is another object of the present invention to provide a novel and improved lock for a building which may also be used to keep small children inside of the building.

It is still another object of the present invention to provide a novel and improved two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors from the outside of the building, comprising, an elongated flexible member having an outer attachment means on the outer end thereof, and an inner attachment means on the inner end thereof, a first retainer means operatively mounted on the inside of said outer door and being operatively attached to the outer attachment means on said elongated flexible member, a second retainer means operatively mounted interior of said inner door and being operatively attached to the inner attachment means on said elongated flexible member, and said elongated flexible member is positioned to pass over one edge of the inner door, whereby the inner and outer doors are locked together, the neither of said doors can be opened from the outer sides thereof, thereby preventing unauthorized entry.

It is still a further object of the present invention to provide a novel and improved two-door lock device which includes an elongated wire cable having the outer end attached to the inner side of an outer door that swings outwardly, and the inner end thereof passed over one edge of an inner door and secured to the inner side of the inner door, or secured both to the inner side of the inner door and to a fixed member, as to a fixed door jamb.

Other objects, features and advantages of this invention will be apparent from the following detailed description, appended claims, and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary, perspective view of two doors in a building which swing open in opposite directions and which are illustrated as being provided with a lock device made in accordance with the principles of the present invention.

FIG. 2 is a front, elevational view of a retainer bracket employed in the lock device structure illustrated in FIG. 1.

FIG. 3 is a right side elevational view of the retainer bracket structure illustrated in FIG. 2, taken along the line 33 thereof, and looking in the direction of the arrows.

FIG. 4 is a front elevational view of an L-shaped guard member employed in the lock device structure illustrated in FIG. 1.

FIG. 5 is a right side elevational view of the guard member structure illustrated in FIG. 4, taken along the line 55 thereof, and looking in the direction of the arrows.

FIG. 6 is a fragmentary, perspective view of two doors in a building provided with a lock device illustrating a second embodiment of the invention.

FIG. 7 is a front elevational view of channel-shaped guard member employed in the locking device structure of FIG. 6.

FIG. 8 is a right side elevational view of the channelshaped guard member structure illustrated in FIG. 7, taken along the line 88 thereof, and looking in the direction of the arrows.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings and in particular to FIG. 1, the numeral 10 represents a building vertical door jamb on which is hingedly mounted an inner door 11 and an outer door 12. The inner door 11 is hingedly mounted for movement inwardly of the building in which the doors are mounted; that is, the inner door 11 would swing counterclockwise, as viewed in FIG. 1, on suitable hinge means mounted on the jamb 10. The outer door 12 would comprise a door such as a storm or screen door, and it would swing outwardly; that is, clockwise, as viewed in FIG. 1, on suitable hinge means mounted on the jamb 10.

The two-door lock means of the present invention includes a first retainer means as a retainer bracket, generally indicated by the numeral 13, which is operatively mounted on the inside of the outer door 12, at a position adjacent the upper end thereof and adjacent the jamb 10 on which the door 12 is hinged. The retainer bracket 13 includes a base plate portion 14 which is provided with a pair of screw holes 15 as illustrated in FIG. 2. The retainer bracket base plate portion 14 is fixedly secured to the inside surface of the door 12 by any suitable means, as by a pair of screws 16 which are extended through the holes 15.

As shown in FIG. 1, the retainer bracket 13 includes an integral, upwardly and inwardly extended attachment arm portion 17 which is provided with a cable attachment hole 18 on the outer end thereof.

The two-door lock means includes an elongated flexible member, as a wire cable, indicated by the numeral 19, which may be made from a suitable material as, for exmaple, steel or aluminum. The wire cable 19 may be made to any suitable length, but in most cases it will be approximately 12 inches long. The wire cable 19 is provided on the outer end thereof with an outer attachment means as a suitable loop 20 that is mounted through the hole 18 on the retainer bracket attachment arm 17. The wire cable 19 is provided with with an inner attachment means as a second loop 21 on the inner end thereof which is adapted to be mounted around a second retainer means as a suitable screw 22 fixedly mounted in the inner surface of the door 11.

The wire cable 19 may be of any suitable diameter, as a /8 inch diameter, and it may be coated with a suitable plastic material or the like. The attachment screw 22 is mounted near the upper right-hand corner of the door 11, as viewed from the inside of the door 11, with the wire cable 19 being disposed over the top of the door 11.

An L-shaped guard member 23 is mounted on the inner face of the door jamb 10 adjacent the upper end thereof, and under the wire cable 19 to prevent cutting of the same. The guard member 23 includes a vertical flange portion 24 which is provided with suitable screw holes 25 (FIG. 4). As shown in FIG. 1, the guard member 23 is secured by suitable screws 26 to the door jamb 10. The guard member 23 includes an integral, horizontal flange 27.

In use, the wire cable 19 can be quickly and easily pulled over the top of the inside door 11, as the inside door is closed. The inner loop 21 is then mounted over the screw 22 on the inside of the door 11. The lock of the present invention cannot be picked or jimmied from the outside of a building. It can be locked or unlocked only from the inside of the door 11. It will be understood, that this lock cannot be activated when no person is in the house, but only when someone is in the house to engage the inner loop 21 with the screw 22. The lock is primarily useful for preventing unauthorized entry into a house, but it also serves as a useful means for keeping small children inside a home; that is, where a small child could not reach up to remove the cable inner loop 21 from the screw 22.

FIGS. 6, 7 and 8 illustrate a second embodiment of the invention, and the parts thereof that correspond to parts of the first embodiment of FIGS. 1 through 5 have been marked with the same reference numerals followed by the small letter b. The embodiment of FIGS. 6, 7 and 8 includes an intermediate attachment means or loop 29 formed in the wire cable 19b, at a point adjacent the inner end thereof, but spaced apart from the loop 21b. The inner end of loop 21b is illustrated in FIG. 6 as being mounted over the retainer screw 22b that is secured to a door trim strip or molding 28. The molding 28 is a conventional molding which would be mounted on the inner face of the door jamb b. The intermediate wire cable loop 29 is mounted over a retainer screw 30 which is secured to the inner face of the door 11b at a point spaced apart from the retainer screw 22b, but horizontally aligned therewith. The wire cable 19b is shown as passing behind the inner door 11b, through the space 31 between the rear edge of the door 11b and the door jamb 10b.

A modified guard member 32 is employed in the structure of FIG. 6. As best seen in FIGS. 7 and 8, the guard member 32 is U-shaped in cross section and includes an inner, vertical flange 33 which is provided with a pair of screw holes 34 for mounting the guard member 32 by means of a pair of screws 35 on the inner side of the door jamb 10b. The guard member 32 further includes the integral, horizontal flange 36 and outer vertical flange 37. The outer vertical flange 37 is provided with a pair of holes 38 which are aligned with the holes 34 and which are larger to permit the passage of a screw driver therethrough for mounting the screwv door, respectively. The provision of two loops on the 6 inner end of the wire cable 19b provides for additional retention strength on the inner end of the wire cable 19b.

While it will be apparent that the preferred embodiments of the invention herein disclosed are well calculated to fulfill the objects above stated, it will be appreciated that the invention is susceptible to modification. variation and change.

What is claimed is:

1. A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors from the outside of the building, comprising:

a. an elongated flexible member having an outer attachment means on the outer end thereof, and an inner attachment means on the inner end thereof;

b. a first retainer means operatively mounted on the inside of said outer door and being operatively attached to the outer attachment means on said elongated flexible member;

c. a second retainer means operatively mounted interior of said inner door and being operatively attached to the inner attachment means on said elongated flexible member; and,

d. said elongated flexible member is positioned to pass over one edge of the inner door, whereby the inner and outer doors are locked together, and neither of said doors can be opened from the outer sides thereof, thereby preventing unauthorized entry.

2. A two-door lock device as defined in claim 1,

wherein:

a. said cable is passed over the upper edge of the inner door.

3. A two-door lock device as defined in claim I,

wherein:

a. said cable is passed over a side edge of the inner door.

4. A two-door lock device as defined in claim 1,

wherein:

a. said first retainer means comprises a retainer bracket, and said elongated flexible member comprises a wire cable and said outer attachment means comprises a loop formed on the outer end of the wire cable and secured to the retainer bracket.

5. A two-door lock device as defined in claim 1, in-

cluding:

a. a third retainer means operatively mounted interior of said inner door; and,

b. an intermediate attachment means on the elongated flexible member operatively attached to said third retainer means.

6. A two-door lock device as defined in claim 1, in-

cluding:

a. a guard member mounted on the door jamb, under the elongated flexible member, between the inner and outer doors.

7. A two-door lock device as defined in claim 6,

wherein said guard member comprises:

a. an elongated L-shaped guard member.

8. A two-door lock device as defined in claim 6,

wherein said guard member comprises:

a. an elongated U-shaped guard member.

9. A two-door lock device as defined in claim 5,

wherein:

a. said second retainer means is mounted on a stationary portion of the building in which said doors are mounted, and said third retainer means is operatively mounted on the inner side of said inner UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION 36,187 m'ted September 17, 1974 Inventor-(s) Larry 'Buettner It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 1, line 35, "the" should be and 'Signedfahdhsea led this 3rd say of December 1974.

(SEAL) Attest: 4 v

' MCCOY M. GIBSON JR. CQMARSHALL DANN v Attesting Officer Commissioner of Patents FORM po-foso (10-69) I USCOWWD'C 6037M, v U.S. GOVERNBENT PRINTING OFFICE: I969 O-356-334 

1. A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors from the outside of the building, comprising: a. an elongated flexible member having an outer attachment means on the outer end thereof, and an inner attachment means on the inner end thereof; b. a first retainer means operatively mounted on the inside of said outer door and being operatively attached to the outer attachment means on said elongated flexible member; c. a second retainer means operatively mounted interior of said inner door and being opeRatively attached to the inner attachment means on said elongated flexible member; and, d. said elongated flexible member is positioned to pass over one edge of the inner door, whereby the inner and outer doors are locked together, and neither of said doors can be opened from the outer sides thereof, thereby preventing unauthorized entry.
 2. A two-door lock device as defined in claim 1, wherein: a. said cable is passed over the upper edge of the inner door.
 3. A two-door lock device as defined in claim 1, wherein: a. said cable is passed over a side edge of the inner door.
 4. A two-door lock device as defined in claim 1, wherein: a. said first retainer means comprises a retainer bracket, and said elongated flexible member comprises a wire cable and said outer attachment means comprises a loop formed on the outer end of the wire cable and secured to the retainer bracket.
 5. A two-door lock device as defined in claim 1, including: a. a third retainer means operatively mounted interior of said inner door; and, b. an intermediate attachment means on the elongated flexible member operatively attached to said third retainer means.
 6. A two-door lock device as defined in claim 1, including: a. a guard member mounted on the door jamb, under the elongated flexible member, between the inner and outer doors.
 7. A two-door lock device as defined in claim 6, wherein said guard member comprises: a. an elongated L-shaped guard member.
 8. A two-door lock device as defined in claim 6, wherein said guard member comprises: a. an elongated U-shaped guard member.
 9. A two-door lock device as defined in claim 5, wherein: a. said second retainer means is mounted on a stationary portion of the building in which said doors are mounted, and said third retainer means is operatively mounted on the inner side of said inner door. 